Gear-case.



G. H. F. HOLY.

55M? CASE.

Mmc/Umea HLED 1326.18.1914.

Imm-naiV Dee. fi, 1917,

In... E

UNITED STATES' rAirmrr: carica.

enoaeng'ir. F. H oLY, or PITTSBURGH, PENNSYLVANIA, AssIGNon To vv'laz'rilnrerromsn ELECTRIC AND MANUFACTURING COMPANY, A CRPRATION OF PENNSYLVANIA.

GEAR-CASE.

Specication of Letters Patent.

Patented Dec. 4, 1917.

Application med-December 18, 1914. Serial No. 877,899.

- One of the objects of my invention is toV provide a .device oi" the above-indicated character which shall be simple and compa-ct in construction and readily assembled and taken apart while in position beneath the cab floor of the locomotive Witlioutfrequiring the removal of adjacent apparatus.

Another object of my invention is to provide an improved construction for reventing the leakage of lubricating material from the gear case, while also permitting the removal of the outer and under sides of the c ae without disturbing the rear or motor s1 e.

A furtherl object of 'my invention is to rovide a gear case having means for readily permitting an external temporary `sup port of the pinion shaft, whereby the motor bearings may be removed for inspection or repairs Without necessitating the removal of the gear case. j

Inthe prior art, when it was desied to remove a geancase of the usual longitudinally' [split type,l it wasoften necessary v to first remove the adjacent apparatus, part'cularly when taking off the .upper half ofltbe case, because of the necessity of/moving it vertically a considerable distance.v Again the use of a track pit has been required to remove the lower half of the case, byA reason V02E the usual relatively small clearance between the gear case and the ground. Moreover, Whenthe bottom wall of 'the case has been closed by means ofthe customary riveting, an undesirable leakage of oil has occurred Vafter a certain length of service. Furthermore, the removal of the motor bear ings has required the previous removal of the entire gear-case before the pinion shaft could be suitably externally supportedI to permit of the desired bearing inspection.

spection, I provide According to my present inventlon, 1 prov ide` a gear case embodying means for obvlating the above-mentioned disadvant es,

In one form, wherein a gear and a plura ity of. pinions meshing at widely Separated points are employed, my gear case referably embodles an upper half comprlsing -a pair of complementary members for respectively incasing one pinion and a art of the gear and adapteo' 1 to be detacha ly secured together 'ina planeet substantiallyright an les to an alined'side of each, which,

if joine would pass substantially opposite thercenter of the gear, and a lower half thatvr 1s adapted for removable attachment tothe said alined sides. The case is thus provided in the upper half bein l u n Y with a plurality -o per1pheral'spl1ts, the one disposed substan-vvl ti ally perpendicular-.to t e split between the.V

upper and lower half, and the variousiparts" belng detaohably4 secured together in' pairs..

The lower half of the gear case preferably comprises two portions: The lowermost part of the outside wall is provided with ann I wardly-b'ent peripheral extension lolf-,su w

stantially L-shape in section and the inner, or motor, side wall .extend parallel to the outer .wall and is adapted to form a continuation of, and a substantially oil tight joint with, the said extension. The

excess lubricating material may be secu-rely held in the trough thus provided. In order vto' permit an externally 'located support of,l

s substantially the pinion shaftjor urposes of bearing inhalf of the gear case that respectively approximately register with-the corres ondin plnion. The motor shaft may thus e rea ily supported to permit bearing inspection.A

al normally suitablycovered opening 1n each part of the upper,

case'constructed inaccordance with my inl vention; Fig. 2 is a view, in front elevation, with a portion broken away, of the gear case shown in Fig. 1; and Fig. 3 issl a view, in'

elevation, of a component member of the gear-case. j

Referring to the drawing, the apparatus here shown comprises a 'gear-wheell which is suitably -secured to a jack' shaft or wheel axle 2, 'as the case may be; a plurality of los ber 9 has already been pointed. out. Moreover, by leaving the bolts 10 tiglitened7 the members 7 and 8 may bo readily removefh as one piece, perpendieularly to the plane of the gear. .i

Although l have shown my gear case as eomprisinggsix separate members fastened together in a certain manner, it will be un.F derstoodthat the structure need not involve all thejdctails illustrated. For example, for convenience in manufacture and installation, the outer Walls 13 of the members 7 and 8 are made separate and are bolted toether, whereas, in some cases, it may be desirable to have these members in one piece or to merely provide them with overapping edges and dispense with the bolts.

To permit removal of the motor bearing housing 5 for the purpose of inspection or repairs, it is merely necessary to remove the bolts 15 and to loosen the bolts 1.9 to nilo-vv removal of the cover member ocorresponding pinion S or and t1' pose suitable lifting Yiaclr or porting member l'lcneatli the ein nut (l, whereupon the sy lie be readily removed xviii-iol the removal of the gear 1 do not wish to be re f cie structural details or arrangeme parts herein set forth, as various mmlilica` tions may be made within the spirit anch scope of my invention and l desire, therefore, that only such limitations shall be imposed as are indicated in the appended claims.

I claim as my invention:

1. The combination with a gear ls-'heel a plurality of pinions meshing there .ith at materially separated points, oi? an 'iny easing device having Complementary parts respectively adapted to inclose one "aid pinions and a portion of the wh to be Secured together and anotl adapted to complete the inclosure of th wheel and to be secured to nach oi parts.

2. A gear-incasing device comprising a side-wall having Van inwardly bent peripheral extension of substantially L-sliape in section and a straight wall portion ceoperating therewith to collectively constitute a member of substantially Ujshape in ist section.

3. A gear-ineasing device comprising a `side-wall having an inwardly bent periph eral extension of substantially Lshape in ysection, the free end of said extension being disposed substantially parallel to said side Wall, and a second side wall forming a continuation of said iree end and. adapted to make a substantially oil-tight joint there-` `with. I

4. A lower half of a gear case comprising a side Wall provided, at its loi-fest prima with 'having a relatively large side 4wa an inwardly bent peripheral `efx'tension of substantially L-shape in section that has a substantially straight'upper edge and a seconcl side wall extending substantially parallel to said first wall and having a lower edge that is adapted to make a readil separable, substantially oiletight joint with the upper edge oi said extension.

5. The combination with a supporting l`ran'le a driving and a driven shaft mounted tllerein, and a meshing pinion and gear wheel disposed on said shafts, of a lower half of a gear case comprising an outer side wall providedt at its lowest point, with an inwardly bent peripheral extension of substantially L-shape in section that has an upper edge substantially parallel to the up per edge of said lower half, said side Wall being elsewhere.provided with an outwardly bent peripheral extension of substantially# L-slnlpe in section that is secured to said 'trame :ind an inner side Wall extendin snbsl'antiallv parallel to said outer wall an imi-'ing a lower n e provided with a shoul- 1 rih the upper edge of said j substantially oil-tight con joint, 'whereby leakage of lubricating material from the case substantially prevented and the outer portion of the said lower half of the case may be readily removed.

6. The combination with a meshing gear wheel and pinion disposed in the same plane, of an inc-asing devi ce. Comprising a plurality of separate parts secured together, one' of said parts being adapted. to inelose the pinion and a portion of the gear Wheel, said part having a relatively large sidewall openl ing approximately registering with the pinn ion.

7. The combination with a gear Wheel and a plurality of materially separated pinions meshing therewith, of an incasing member haring connilementary parts respectively adapted to ,inclose one of said pinions and a portion of the gear wheel, said parte each l opening approximately registering with the corresponding pinion7 and detachable cover members for said openings.

8. A gear--incasing device comprisin a side-wall having an inwardl bent perlpheral extension of substantie ly L-shape in section adapted to constitute an oil pan, and a straight wall section coperating with said oil pan to collectively constitute a member of substantially Ushape in section.

9. A gear-incasing device comprising a side-Wall having an inrardl bent periph eral extension of substantia ly L-sha e in section, the free end of said extension eing disposed substantially parallel to said side wall and constituting a pocket for; lubricating material, and a sec-ond side-wall forming a continuation of said' free end and Lmfm adapted to make a substantially' oll-tght portion having en integral oil 'pan into joint therewith. which ,naald gem' wheel if# afleptdto dip.

10. The gpmbinution 'with u meshing gem'- .ln tltsxtmony whereof, I have hereunto wheel anglmpinion, 'of an ncusng .member :-;uli\;rzrilw.d my name this 15th ddy of Dec. l closely t'ting the 'g'erlphery of said geil-1t 15H11 able wall seetlou or llwlosmg u. portlon 01' (I U lj" [I B -HOLY Saud gear and another independently renmv-l W llg'nessee',

able sectlon for melosmg the p mmn and. ml- I-L Il., l;U 1meAsufLE,

10 other portion of Suid gear, eed first Well 'l EA 'mme 

